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\begin{document}
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\begin{frontmatter}
    \date{}

    \title{Results on the Search for Pseudoscalar and Scalar Weakly Interacting Sub-eV Particles with 2014 Dataset of the OSQAR Experiment}

    \author[fourier]{B.~Barbara}
    \author[fourier]{R.~Ballou}
    \author[cern]{G.~Deferne}
    \author[grenoble]{J.-M.~Duchamp}
    \author[grenoble]{L.~Duvillaret}
    \author[prague]{M.~Finger}
    \author[prague]{M.~Finger~Jr.}
    \author[prague]{L.~Flekova}
    \author[CTU]{J.~Hosek}
    \author[CTU]{M.~Kral}
    \author[IFTUW]{K.~Meissner}
    \author[LNCMI]{P.~Pugnat}
    \author[JGU]{M.~Schott}
    \author[cern]{A.~Siemko}
    \author[prague]{M.~Slunecka}
    \author[ACSR]{A.~Srnka}
    \author[tul]{M.~Sulc}
    \author[CTU]{M.~Virius}
    \author[grenoble]{G.~Vitrant}
    \author[JGU]{C.~Weinsheimer}
    \author[CTU]{J.~Zicha}

    \address[fourier]{Institut Néel, CNRS \& Université Joseph Fourier, BP166,
        38042 Grenoble Cedex-9, France}
    \address[cern]{CERN, CH-1211 Geneva-23, Switzerland}
    \address[grenoble]{IMEP-LAHC, UMR CNRS 5130, Minatec-INPG, BP 257,
        38016 Grenoble Cedex-1, France}
    \address[prague]{Charles University, Faculty of Mathematics and Physics,
        Prague, Czech Republic}
    \address[CTU]{Czech Technical University, Prague, Czech Republic}
    \address[IFTUW]{Institute of Theoretical Physics, University of Warsaw,
        Poland}
    \address[LNCMI]{LNCMI-G, CNRS-UJF-UPS-INSA, BP 166, 38042 Grenoble Cedex-9,
        France}
    \address[JGU]{University of Mainz, Institute of Physics, 55128 Mainz,
        Germany}
    \address[ACSR]{Institute of Scientific Instruments ASCR, 612 64 Brno,
        Czech Republic}
    \address[tul]{Technical University of Liberec, 461 17 Liberec,
        Czech Republic}


    \begin{abstract}
Weekly interacting sub-eV particles (WISPs) are theorized to have a di-photon coupling vertex which allows for an experimental search using quantum oscillations of optical photons facing a strong magnetic field. The OSQAR photon regeneration experiment searches for scalar- and pseudo-scalar WISP candidates by a Light-Shining-Through-Wall setup. The analysis of the data, taken in the year 2014 with an improved experimental setup, shows no excess of events over the expected background, allowing us to constrain the di-photon coupling strength down to $3.2\cdot 10^{-8} \GeV^{-1}$ in the massless limit. This result is the most stringent constraint on the di-photon coupling strength ever achieved in a purely laboratory based experiment.
    \end{abstract}

\end{frontmatter}

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\input{Sec1_Introduction}
\input{Sec2_ExperimentData}
\input{Sec3_DataAnalysis}
\input{Sec4_Limits}
\input{Sec5_Conclusion}

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\section*{References}
\bibliography{OsqarPaper2015}
\bibliographystyle{unsrt}

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\end{document}
